What's New in Java 9 - Modules and More!

Improve Your Career Prospects by Learning About New Java 9 Features Like Modules, JShell, Processes and More.

Created byTim Buchalka's Learn Programming Academy, Dr. Frank Mitropoulos

Last updated 4/2025

English

What you'll learn

Understand the new features in Java 9
Be able to use the new features in their own projects

Course content

14 sections • 63 lectures • 7h 37m total length

Introduction to the Course1:00
In this video we provide a brief introduction to the course.

Installing JDK 9 on Windows5:23
In this video we will download and install the Java 9 JDK on the Windows platform
Installing IntelliJ on Windows2:25
In this video we will download and install INtelliJ on the Windows platform
Installing JDK9 on Mac OSX2:26
In this video we will download and install the Java 9 JDK on the Mac OSX platform
Installing IntelliJ on Mac OSX1:45
In this video we will download and install INtelliJ on the Mac OSX platform
Configuring IntelliJ on Mac OSX and Windows2:32
In this video we will configure IntelliJ to work with JDK 9 on Mac OSX and Windows

Introduction to the Java Shell4:39
In this video we will provide an overview of the Java Shell
Getting Started10:33
In this video we learn the basics of using the Java Shell
Getting Help5:17
In this video we will show how to get help from within the Java Shell
Understanding Snippets7:56
In this video we will explain snippets and how there are using in the Java Shell
Editing and Navigating Code Snippets8:24
In this video we will show how to navigate and edit code snippetes in the Java Shell
Using Variables11:47
In this video we will discuss the basics of using variables in the Java Shell
Using Methods14:40
Using an External Editor14:56
In this video we will see how to configure and use an external editor in the Java Shell
Using Classes12:19
In this video we will see how we can using our own Classes in the Java Shell
Auto-Complete and Shortcuts9:49
In this video we will look at how auto-complete and shortcuts make the Java Shell more efficient to use
Loading and Saving Snippets6:57
In this video we will learn how to load and save snippets and other Java Shell information to and from files
Using JAR Files8:19
In this video we will learn how to use external JAR files directly in the Java Shell
Using Modular JAR Files3:08
In this video we will learn how to use JAVA 9 Modular JAR files directly in the Java Shell

Introduction to the Java Module Platform System3:08
In this video we will provide an introduction to the Java 9 Plaform Module System
Motivation and Goals of the Java Platform Module System7:06
In this video we will look at the motivation for and the goals of the Java 9 Platform Module System
What is a Module?4:31
In this video we will describe the elements of a Java 9 module
The requires and exports Module Directives4:48
In this video we will learn how to use the requires and exports module diectives
The Modular JDK7:45
In this video we will decribe the new modular JDK
Module Graphs7:01
In this video we will learn about module graphs and how the module system uses them
Our First Modular Application12:40
In this video we will create a modular JokeServer application using simple editor and command-line tools
Our First Modular Application in IntelliJ10:33
In this video we will create the modular JokeServer application in IntelliJ
Refactoring to Allow Multiple JokeServers10:08
In this video we refactor our JokeServer to use and interface and support multiple JokeServers
Using the JavaService Loader with the Java 9 Module System6:25
In this video we review the Java ServiceLoader and see how we can use it in Java 9 with the uses and provides-with module directives
Refactoring JokeServer to Provide Services6:51
In this video we refactor our JokeServer to use and provides services using ServiceLoader
Allowing Reflective Access using the open(s) Directives3:41
In this video we'll examine the opn, opens, and opens-to module directives used to used to allow reflection
Adding a GUI to the JokeServer and Allowing Reflection12:51
In this video we will add a JavaFX GUI to the JokeServer and use the opens module driective to allow reflection at runtime
jlink: Creating a Custom JRE4:29
In this video we will learn about jlink and how to use it to create custom runtime images
Using jlink to Create Custom Runtimes for our Modular App and JokeServer7:42
In this video we will create custom JREs for our Modular App and JokeServer
Migrating Existing Code to the Java 9 Module System10:14
In this video we we look at various scenarios for using existing code within the Java 9 Module System
Example of Migrating Existing Code to the Java 9 Module System2:01
In this video we will look at the process that we will use to migrate an existing Java 8 application to Java 9 modules
Example of Migrating an Existing Application - Part 17:08
In this video we take an existing Java 8 application and migrate it to Java 9 using the classpath and the unnamed module
Example of Migrating an Existing Application - Part 25:21
In this video we continue the migration process by moving a non-modular JAR file to the modulepath and using it as an automatic module
Example of Migrating an Existing Application - Part 39:53
In this video we continue the migration process by converting our own code to explicity named Java 9 modules
Example of Migrating an Existing Application - Part 46:52
In this video we complete the migration process by converting a 3rd party library to a modular JAR file
Using Maven with Java 9, Modules, and IntelliJ11:26
In this video we will look at the Graphical Joke Server App as a Maven project in IntelliJ that works with Java 9 Modules

Requirements

It's desirable to have some knowledge of Java, or another object oriented language

Description

Do you know some Java, but worry that with the recent release of Java 9, your skills are now outdated?

Maybe you are a programmer in another language, but want to improve your career prospects by learning about Java 9?

Perhaps you know Java 8 well, and want to find out about the new features in Java 9 so you can put them to use as quickly as possible?

Whatever the reason, if you want to find out about the new features in Java that are relevant to the majority of Java developers, then this course is for you.

The goal of the course was not to simply go quickly through all the new features in Java 9 at a very high-level. Nor was the goal to get into such detail that we forget about the feature we are studying.

Instead, the course was designed to help you really understand these new features.

So, we'll look at what motivated the changes in Java 9 so we can better understand why there are needed and what issues they address.

Then simple, but relevant examples are provided to demonstrate each feature.

Your instructor in this course is Frank Mitropoulos Ph.D, a university professor with over 23 years of software development teaching experience.

What are some of the new features in Java 9?

Among the many new features in Java 9 are the Java Shell, The Java Platform Module System, and updates to the Process API.

In this course we'll look at the Java Shell in detail.

We think you will love the Java shell! It makes learning Java, exploring APIs, and experimenting with Java code so much easier and very productive.

Once you start using it, we think you will go back to it over and over again when you have to write small snippets of code and especially when you are learning a new concept.

The Java Platform Module System is probably the feature that most developers have heard about when they think about Java 9.

The Java 9 Platform Module System allows Java to move forward by modularizing the JDK as well as adding modules as first class citizens to Java.

The module system is actually quite intuitive and we think you will understand it and appreciate its impact straight away.

In this course we explain the motivation and goals for the module system and then we look at every detail. Along the way we create a modular JokeServer application that we take from not using modules at all, all the way through being completely modularized and having a JavaFX front end.

Finally, we discuss some of the issues you may have when migrating existing non-modular code in Java 9 and we walk through a simple example.

Another exciting addition to Java 9 are the updates to the Process API.

The Process API allows developers to work with native processes directly in Java code.

No more hacky code and no more Java Native Interface code is needed to do things that were previously impossible to do directly in Java.

In this course we look at the main use-cases where the Process API can be used and show live code examples right in the Java shell. You won’t believe how easy we can now work with processes on any OS.

That's just an example of some of the content of What's New in Java 9.

If you are ready to learn about the wonderful new features of Java 9, then click the enrolling button and get started today.

Who this course is for:

Programmers in other languages wanting to understand new features of Java 9
Java 7 or Java 8 programmers wanting to find out more about Java 9

What's New in Java 9 - Modules and More!

What you'll learn

Explore related topics

Course content

Introduction1 lecture • 1min

Installation and Setup5 lectures • 15min

The Java Shell (REPL)13 lectures • 1hr 59min

The Java 9 Platform Module System22 lectures • 2hr 43min

The Streams API2 lectures • 20min

Private Method in Interfaces2 lectures • 15min

Factory Methods for Collections2 lectures • 17min

Try With Resources2 lectures • 12min

Diamond Operator2 lectures • 7min

SafeVarargs Annotation2 lectures • 11min

Requirements

Description

Who this course is for: